Chemical Engineering Exam > Chemical Engineering Questions > For a balanced counter flow heat exchanger (...
Start Learning for Free
For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?
- a)0.5
- b)1.5
- c)0.33
- d)0.2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU ...
For a balanced counter flow heat exchanger effectiveness is given as
ε = NTU/1+NTU = 1/1+1
⇒ ε = 1/2
⇒ ε = 0.5
Free Test
FREE
| Start Free Test |
Community Answer
For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU ...
Solution:
Given, mh ch = mc cc and NTU = 1.0
We know that the effectiveness of the heat exchanger is given by the equation:
ε = (1 - e^-NTU)/(1 - (mc/mh)e^-NTU)
Substituting NTU = 1.0 and (mc/mh) = (cc/ch), we get:
ε = (1 - e^-1)/(1 - (cc/ch)e^-1)
Simplifying further, we get:
ε = (1 - 1/e)/(1 - (cc/ch)/e)
ε = (e - 1)/(e - (cc/ch))
ε = (2.718 - 1)/(2.718 - (cc/ch))
ε = 0.632/(2.718 - (cc/ch))
Since mh ch = mc cc, we can write cc/ch = mh/mc
Substituting this, we get:
ε = 0.632/(2.718 - (mh/mc))
Since mh ch = mc cc, we can write mh/mc = cc/ch = 1
Substituting this, we get:
ε = 0.632/(2.718 - 1)
ε = 0.5
Therefore, the effectiveness of the heat exchanger is 0.5.
Answer: (a) 0.5
Given, mh ch = mc cc and NTU = 1.0
We know that the effectiveness of the heat exchanger is given by the equation:
ε = (1 - e^-NTU)/(1 - (mc/mh)e^-NTU)
Substituting NTU = 1.0 and (mc/mh) = (cc/ch), we get:
ε = (1 - e^-1)/(1 - (cc/ch)e^-1)
Simplifying further, we get:
ε = (1 - 1/e)/(1 - (cc/ch)/e)
ε = (e - 1)/(e - (cc/ch))
ε = (2.718 - 1)/(2.718 - (cc/ch))
ε = 0.632/(2.718 - (cc/ch))
Since mh ch = mc cc, we can write cc/ch = mh/mc
Substituting this, we get:
ε = 0.632/(2.718 - (mh/mc))
Since mh ch = mc cc, we can write mh/mc = cc/ch = 1
Substituting this, we get:
ε = 0.632/(2.718 - 1)
ε = 0.5
Therefore, the effectiveness of the heat exchanger is 0.5.
Answer: (a) 0.5
|
Explore Courses for Chemical Engineering exam
|
|
Top Courses for Chemical EngineeringView all
Question Description
For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? for Chemical Engineering 2025 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer?.
For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? for Chemical Engineering 2025 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer?.
Solutions for For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemical Engineering.
Download more important topics, notes, lectures and mock test series for Chemical Engineering Exam by signing up for free.
Here you can find the meaning of For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer?, a detailed solution for For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice For a balanced counter flow heat exchanger (i.e. mh ch = mc cc), NTU is equal to 1.0. What is the effectiveness of the heat exchanger?a) 0.5b) 1.5c) 0.33d) 0.2Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Chemical Engineering tests.
|
|
Explore Courses for Chemical Engineering exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily